:root {
            --primary-color: #0d6efd;
            --secondary-color: #6c757d;
            --success-color: #198754;
            --danger-color: #dc3545;
            --warning-color: #ffc107;
            --info-color: #0dcaf0;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --anqie-primary: #0d6efd;
            --anqie-secondary: #3caea3;
            --anqie-accent: #ff6b6b;
        }

        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-color);
            line-height: 1.7;
            background-color: #f9f9f9;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        
        h1, h2, h3, h4, h5 {
            font-weight: 600;
            color: var(--primary-color);
        }
        .bg-blue {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%); 
        }
        .bg-white { background:#fff; }
        .color-white { color:#fff; }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            text-align: center;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--anqie-primary);
            display: inline-block;
            padding-bottom: 15px;
            position: relative;
        }
        
        .section-title h2:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--anqie-accent);
            border-radius: 2px;
        }




        /* 按钮 */
        .btn-anqie {
            background-color: var(--anqie-primary);
            color: white;
            border-radius: 30px;
            padding: 12px 30px;
            font-weight: 600;
            transition: 0.3s;
            text-decoration: none;
            display: inline-block;
            border: none;
        }
        .btn-anqie:hover {
            background-color: #0b5ed7;
            color: white;
            transform: translateY(-3px);
        }
        .btn-outline-anqie {
            border: 2px solid var(--anqie-primary);
            color: var(--anqie-primary);
            border-radius: 30px;
            padding: 10px 25px;
            font-weight: 600;
            transition: 0.3s;
            background: transparent;
            text-decoration: none;
            display: inline-block;
        }
        .btn-outline-anqie:hover {
            background-color: var(--anqie-primary);
            color: white;
        }
        
        footer {
            background: #1e2a3a;
            color: #a0b3c9;
            padding: 60px 0 30px;
            margin-top: auto;
        }
        footer h5 {
            color: #fff;
        }
        footer a {
            color: #a0b3c9;
            text-decoration: none;
        }
        footer a:hover {
            color: #fff;
        }